(12775) Brackett Main-belt Asteroid
Discovered on 12 August 1994 by E. W. Elst at La Silla.
U.S. physicist Frederick Sumner Brackett (1896-1988) predicted the far-infrared lines of the hydrogen spectrum.Naming citation (20041126/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Brackett is today
Seen from above the solar system on 2026-10-14: Brackett is 2.56 au from the Sun and 3.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12775 |
| Provisional designation | 1994 PX22 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.09 |
| Orbital period | 4.30 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.00 – 3.29 au |
| Eccentricity | 0.245 |
| Inclination | 3.74° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Frederick
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- (9273) Schloerb
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- (45595) Inman
- (74509) Gillett
- (95449) Frederickgregory
- (152641) Fredreed
- (164405) Fennell
All asteroids named after someone called Frederick
Also discovered on 12 August 1994
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- (8550) Hesiodos
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- (9641) Demaziere
- (9778) Isabelallende
- (9879) Mammuthus
- (9880) Stegosaurus
- (10151) Rubens
- (10361) Bunsen
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- (11095) Havana
- (11583) Breuer